ProgramNode(0...35)(
  [:str],
  StatementsNode(0...35)(
    [LocalVariableWriteNode(0...35)(
       :str,
       0,
       InterpolatedStringNode(6...35)(
         (6...12),
         [StringNode(14...30)(
            nil,
            (14...30),
            nil,
            "before\u0000\u0000after\r\n"
          )],
         (30...35)
       ),
       (0...3),
       (4...5)
     )]
  )
)
